When you're put in prison, your "freedom is taken". We use that language for a reason. It's what happens, it's intentional, and I used to think everyone understood what it meant. Choices in prison are not the same as "every choice in life".
I don't disagree with what you said, but I don't think that supports the conclusion above.
Trade-offs are different in all sorts of situations. All choices in life have consequence. The fact that one is better than the other does not negate anything or create slavery
So nothing can be slavery if there's any choice at all? By that logic slavery can never exist, because any slave can chose not to work and be killed, kill themselves, run, etc.
At some point you have to draw a line and say, there is choice, but there's not enough choice to say it's not slavery.
